Hey John,
Sorry to be thick headed about this, but I want to make sure we are chasing the right problem. What Bruce is talking about would be the way to fix a wobble, like the bars are wanting to twist left and right. I'm thinking you might be experiencing a severe vibration, or buzzing in the bars like you are riding a jack hammer.
If it is a loose steering head, I recently did mine and took some pictures I could send your way if you'd like.